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Kaushal Sharma, Santosh Joshi & Harinder P. Singh

Low resolution spectroscopic investigation of Am stars using Automated method

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Mots-clés : astronomie, astrophysique, étoiles, observatoires, spectroscopie

Abstract

The automated method of full spectrum fitting gives reliable estimates of stellar atmospheric parameters (Teff, log g and [Fe/H]) for late A, F, G, and early K type stars. Recently, the technique was further improved in the cooler regime and the validity range was extended up to a spectral type of M6 - M7 (Teff 2900 K). The present study aims to explore the application of this method on the low-resolution spectra of Am stars, a class of chemically peculiar stars, to examine its robustness for these objects. We use ULySS with the Medium-resolution INT Library of Empirical Spectra (MILES) V2 spectral interpolator for parameter determination. The determined Teff and log g values are found to be in good agreement with those obtained from high-resolution spectroscopy.

Keywords : astronomy, astrophysics, instrumentation, observatories, spectroscopy, stars

To cite this article

Kaushal Sharma, Santosh Joshi & Harinder P. Singh, «Low resolution spectroscopic investigation of Am stars using Automated method», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 87 - Année 2018, Actes de colloques, First Belgo-Indian Network for Astronomy & Astrophysics (BINA) workshop - November 2016 - Nainital, India, 121 - 124 URL : https://popups.uliege.be:443/0037-9565/index.php?id=7566.

About: Kaushal Sharma

Inter-University Centre for Astronomy and Astrophysics, IUCAA, Pune - 411007, India and Department of Physics and Astrophysics, University of Delhi, Delhi - 110007, India, kaushals@iucaa.in

About: Santosh Joshi

Aryabhatta Research Institute of Observational Sciences, Nainital- 263002, India

About: Harinder P. Singh

Department of Physics and Astrophysics, University of Delhi, Delhi - 110007, India